Machine for curling the edges of can bodies, tubes, or the like



TUBES OR THE LIKE Filed April 21, 1925 2 Sheets-Sheet l INVENTOR L R"[|'||u|u. i Hi5 I W I M m r. W l 5:. E: HUN H E U \Q 9% v: b. H. I IIII IIH m w IHHHHHH l as Q q 1 U S A .h. 3 l. U Mam 1 -U M .L \N. \m W 11y I\\ \N NW i H E k SQ 4 I I l I I I Jan. 1925- 1523;432

P. KRUSE MACHINE FOR CURLING THE EDGES 0F CAN BODTES, TUBES, OR THE LIKEFiled April 21, 1923 2 Sheet-Sheet a INVENTOR Patented Jan. 20, 1925.

fiTATE tartar PETER KRUSE, OE BROOKLYN, NEVJ YDRK, ASSIG-NO'R TO E. W.BLISS COMPANY, OF BROOKLYN, NEW YGRK, A CCRPORATION OF WEST VIRGINIA.

MACHINE FOB, CURIJNG THE EDGES OF CAN BODIES, TUBES, OR THE LIKE.

Application filed April 21, 1923.

To all whom it may concern:

Be it known that I, Pncrnn Knusnz, a citizen of the United States ofAmerica, residing in the borough of Brooklyn, city and State of NewYork, have invented certain new and useful Improvements in Machines forCurling the Edges of Can Bodies, Tubes, or the like, of which thefollowing is a specification.

This invention relates to machines for curling the edges of can bodies,tubes or the like, and aims to provide improvements therein.

The invention provides a device of the character stated which is ofgreat simplicity, and capable of curling the edges on can bodies or thelike at a considerably higher rate than performed by the modifiedseaming machines now used for the purpose.-

An embodiment of the invention is illustrated in the accompanyingdrawings, in Which Figure 1 is a longitudinal view, partly in elevationand partly in section, of said embodiment.

Fig. 2 is a cross-section on the line IIII, Fig. 1, looking in thedirection of the arrows.

Fig. 3 is a, similar view on the line IIIHI, Fig. 1, looking in thedirection of the arrows.

Referring to said drawings, numeral 10 is a rotary carrier, comprising ashaft 12 mounted in bearing-posts 14:, 15, and having fixed thereon acan support 17 a spider or bracket 19 adapted to support the spindles 21of a plurality of heads 23 having curling means 2d thereon; and also aspider or bracket 25 adapted to support a plurality of pads 27 adaptedto engage the edges or ends of the can bodies opposite the heads 23, thenumber of pads 27 corresponding to the number of heads 23, and the padsand heads being axially relatively movable whereby the edges of the canbodies to be curled may be brought into working relation with thecurling means on said heads. As here shown, the pads 27 are axiallymovable on the support 25, being mounted on slides 29, and are notrotatable on their own axis when the heads 23 are rotatable. Axialmovement is imparted to the slides 29 by suitable means, such as a cam30 engaging rollers 31 on said slides 29. The cam 30 may be mountedloosely on the shaft 12, and prevented from turning by means ofscrew-bolts 33 engag- Serial No. 633,706.

ing said cam 30 and threaded into a plate 34, fixed to oneof thebearingposts 14:, as indicated at 85. y

The carrier 10 is rotated by suitable means, as a gear on one end of theshaft 12, and a pinion 11 and pulley 12 on a counter shaft- 44.

Suitable means are provided for rotating the curling heads 23 during therotation of the carrier 10. These means preferably comprise pinions onthe spindles 21 of said heads, and a gear 52 (here shown as an internalgear) rotatable on said carrier 10, and driven in suitable manner,preferably independently, as by a pulley 5a formed on said gear 52.

The curling means 2 1 are preferably in the form of grooved rollers, asshown, a plurality being provided on each head 23. These rollers 24 rollon the edge of the can body and turn and curl the edge inward to form aroll edge, such as is usual in the type of cans known as slip-covercans.

The edge of the can body opposite that which is being curled may or maynot have a flange thereon (such as is used in forming a seam with abottom) and bears against the flat surface of the pad during the curlingoperation, in such manner that any movement would produce slidingfriction. The sliding friction is sufficient to prevent the can bodyfrom turning under the rolling action of the rollers 2a on the edge ofthe can body being curled.

The can support 17 has a plurality of can receiving recesses therein,and these recesses are preferably open in such manner as to admit of theready reception and discharge of can bodies therefrom.

The shaft 12 of the carrier 10 is preferably mounted horizontally, andthe can bodies are conveniently received from a suitable magazine orchute into the recesses 60 at the upper part of their circle ofmovement, resting by gravity in said recesses. In the uppermost positionof the pads 27', the contour of the cam 30 is such that the slides 29are drawn away from the heads 23 leaving an opening for the reception ofthe can bodies in the recesses 60. The cam 30 then has a rise 67 whichmoves the slides 29 toward the heads 23 and thereby causes the pads 27to press the interposed can bodies against the curling rollers 24: onthe heads 23. The portion 67 of the cam 30 has superposed thereon aslight rise which feeds the can bodies toward the heads 23 as the edgeis turned inward by the curling rollers 24. By the time the curling hasbeen completed the carrier 10 has moved the recess containing the curledcan body to nearly its lowest position. The cam 30 meanwhile acts todraw the slide 29 of the pad 27 hearing against the curled can body in adirec tion away from the heads 23, thereby leaving the can bodyunsupported, and the can body then falls into a basket or chute, bymeans of which it is removed from the machine.

In order to assist the disengagement of the can bodies from the curlingrollers 24,, the heads 23 may be provided with resilient knock-outs 70.These knock-outs yield as the can bodies are pushed against the.

rollers 2& by the pads 27, but react to push the can bodies away fromthe heads 23, when the pads 27 move away.

The machine may be adjusted for cans of different height by threadingthe bolts 35 attached to the cam 30 in or out. The rollers 31 in the cam30, attached to the slide 29, draw the bracket with them when the cam ismoved, the bracket 25 being made axially movable on the shaft 12 forthis purpose.

The inventive ideas may receive other embodiments than that hereinspecifically illustrated and described.

lVhat I claim is 1. A machine for curling edges of canbodies or thelike, comprising a rotating carrier having thereon means for supportingaplurality of can-bodies, aplurality of rotary heads and a correspondingplurality of pads, each head having curling means thereon adapted to actendwise on and to curl the edges of said can-bodies, and each pair ofheads and pads being in axial alinement, means for producing axialrelative movement between said pads and heads whereby the edges ofcan-bodies are brought into and out of working relation with the curlingmeans on said heads, and means for imparting rotary movement to saidheads while revolving on said rotary carrier.

2. A machine for curling edges of canbodies or the like, comprising arotating carrier raving thereon means for supporting a plurality ofcan-bodies, a plurality of rotary head; and a corresponding plurality ofpads, each head having curling means thereon adapted to act endwise onand to curl the edges of said can-bodies and each Y pair of heads andpads being in axial alinewhile revolving on said rotary carrier, said.

means for rotating said heads comprising spindles on which each head ismounted and pinions on said spindles, and a gear rotatable on saidrotary carrier and engaging said pinions.

3. A machine for curling edges of canbodies or the like, comprising arotating carrier having thereon means for supporting a plurality ofcan-bodies, a plurality of rotary heads and a corresponding plurality ofpads, each'head having curling means thereon adapted to act endwise onand to curl the edges of said can-bodies and each pair of heads and padsbeing in axial alinement, means for producing axial relative movementbetween said pads and heads whereby the'edges ofcan-bodies are broughtinto and out of working relation with the curling means on said heads,and means for imparting rotary movement to said heads while revolving onsaid rotary carrier, said means for rotating said heads comprisingspindles on which each head is mounted and pinions on said spindles, agear rotatable on said rotary carrier andengaging said pinions, andmeans for independently driving said carrier and said gear.

i. A machine for curling edges of canbodies or the like, comprising arotating carrier having thereon means for supporting a plurality ofcanbodies, a plurality of rotary heads and a corresponding plurality ofpads, each head having curling means thereon adapted to act endwise onand to curl the edges of said can-bodies and each pair of heads and padsbeing in axial alinement, means for producing axial relative movementbetween said pads and heads whereby the edgesot' can-bodies are broughtinto and out oi? working relation with the curling means on said heads,and means for imparting rotary movement to said heads while revolving onsaidrotary carrier, said heads having knockouts thereon for pressingsaid can-bodiesawayv from said heads when said heads and pads moveaxially apart. 7

5. A machine for curling edges of canbodies or the like, comprising arotating car-- rier having thereon means for supporting a plurality ofcan-bodies, a plurality of rotary heads and a corresponding plurality ofpads, each head having curling means thereon adapted to act endwise onand to curl the edges of said can-bodieshnd each pair of heads and padsbeing in axial alinement, means for producing axial relative movementbetween said pads and headswhereby the edges of can-bodies are broughtinto and out of working relation with the curling means on said heads,and means for imparting rotary movement to said heads while revolving onsaid rotary carrier, said carrier turning on a horizontal axis, and saidcan supports being open, whereby canbodies may fall therefrom when saidheads and pads are moved axially apart and said supports are at thelower part of their circle of movement.

6. A machine for curling edges of canbodies or the like, comprising arotating carrier having thereon means for supporting a plurality ofcan-bodies, a plurality of rotary heads, and a corresponding pluralityof pads, each head having a curling means thereon adapted to roll on theedge of a canbody, each pair of heads and pads being in axial alinement,means for producing axial relative movement between said pads and headswhereby the edges of can-bodies are brought into and out of workingrelation with the curling means on said heads, and means for inuoartingrotary movement to said heads while revolving on said rotary carrier,said pads being immovable around their own axes.

T A machine for curling edges of canbodies or the like, comprising arotating caralinement, means for producing axial relative movementbetween said pads and heads whereby the edges of can-bodies are broughtinto and out of working relation with the curling means on said heads,and means for imparting rotary movement to said heads while revolving onsaid rotary carrier, said pads being immovable around their own axes,said carrier turning on a horizontal axis and said can supports beingopen, whereby can bodies may fall therefrom when said heads and pads aremoved axially apart and said supports are at the lower part of theircircle of movement.

In Witness whereof, I have hereunto signed my name.

PETER KRUSE.

